I read this advice many moons ago on how to establish your own peak response time by Dr Lois Jovanovic, Diabetologist:
"determine the best time for postprandial SMBG by testing 45, 60, 75, 90, 105, and 120 minutes after a meal to detect their peak postprandial glucose concentration"
Her advice to physicians on self-monitoring of blood glucose below:
Educate your patients on the risks associated with high peak-postprandial glucose concentrations (≥150 mg/dL) (8.3mmol)
Ensure patients understand that postprandial glucose concentrations are determined by the total amount of carbohydrates consumed
•• Encourage patients to measure their carbohydrate consumption
•• Recommend that patients keep a food diary
Remind patients of the benefits of monitoring their blood glucose levels with SMBG and construct a testing plan that optimizes these benefits
•• Have patients determine the best time for postprandial SMBG by testing 45, 60, 75, 90, 105, and 120 minutes after a meal to detect their peak postprandial glucose concentration
•• Using preprandial and postprandial SMBG, together with a food diary, patients can understand how certain foods influence their glucose concentrations
•• If preprandial glucose concentrations are already high, there is no room for carbohydrates in the upcoming meal
Review recent SMBG and food diary data with your patients to help them recognize trends in out-of-target readings
•• Use this information to recommend a specific SMBG testing schedule including number of tests per day and appropriate testing times
•• Have patients meet with a nutrition specialist if they are having trouble identifying or controlling their carbohydrate consumption